International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Most Trusted Research Journal Since Year 2012

ISSN: 2319-7064



Research Paper | Astronomy Science | India | Volume 3 Issue 7, July 2014

Solar Dynamo Model

Rohini V. S.

Sunspots shows vortex structure & are approximated by SLVs (single layered vortices) at solar minima & MLVs (multi layered vortices) at solar maxima. Rolling magneto convection and rotation assosciated with the sunspot vortex is responsible for the dynamo action in it. The sunspot vortices in growing or decaying stage participate in meridonal circulations while moving in magnetically quantised solar latitudinal belts.This results in net variation in solar magnetic field and thus solar minima and maxima. The sun spot area (SSA, ie visible area of sunspot on photosphere) shows delay with respect to composite total solar irradiance (CTSI ).Solar magnetic field (B) is cause of delay. Delay is maximum at solar minima & minimum at solar maxima.Poloidal component of magnetic field (BP) delays while toroidal component of magnetic field (BT) enhances the solar energy transportation. Over a period of 3 solar cycles, the analysis shows that wrt CTSI, SSA shows a delays of 13.5 days at solar maxima and 230 days at solar minima.

Keywords: sun, rolling magneto convection & solar dynamo, SLV, MLV, sunspot, delay

Edition: Volume 3 Issue 7, July 2014

Pages: 821 - 825


How to Cite this Article?

Rohini V. S., "Solar Dynamo Model", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=20141060, Volume 3 Issue 7, July 2014, 821 - 825

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Background: Over past two decades neonatal morbidity associated with sepsis has increased due to changing microbial spectrum. To establish early diagnosis of neonatal sepsis is a challenge because of varied clinical presentations. For definite diagnosis of sepsis, culture results are gold standards which are time taking process. The other recent available markers are sensitive but expensive. Hence they have limited use in financially constrained setup. Therefore there is always a need for a cost effective test to detect infection that could be easily performed in our set up. Objective: Present study has been undertaken mainly to detect neonatal sepsis and to emphasis the fact that hematological scoring system of Rod well suggested in 1988 which was based on CBC report should be established as a part of routine protocol for examination in neonates suspicious for sepsis in order to prevent morbidity due to late diagnosis of sepsis. Material and methods: A prospective study was conducted in NICU of district hospital Vidisha (MP) from March 2019 to April 2019.All neonates with clinical suspicion for sepsis were enrolled in the study. A baseline CBC and blood culture were sent. The HSS were analysed according to the HSS of Rod well et al, score of more than 2 out of 7 consider to be indicative of sepsis. Conclusion: Rod well hematological scoring system is a feasible and cost effective method in detecting neonatal sepsis for resource limited set up.